Dairy Cow Longevity and Welfare | Animal Welfare Hub

The average productive life of a dairy cow has declined to fewer than three lactations in high-production systems, meaning most cows are culled by their fifth year of life.

Key Facts

High-yielding dairy breeds have average productive lifespans of 2.5-3 lactations before culling
Culling is primarily driven by lameness, mastitis, reproductive failure, and low production
Cows can live 15-20 years in less demanding conditions
Shorter productive lives mean more replacement heifers are needed, increasing the environmental footprint per litre of milk
Some farmers and researchers are exploring longer-lived, lower-production models as more sustainable

Welfare Considerations

The shortening productive life of dairy cows reflects the physiological cost of very high milk yields. Cows pushed to their metabolic limits suffer higher rates of lameness, mastitis, ketosis, and reproductive disease. Culling a cow at age four or five for being economically unproductive, when she could live another decade, represents a welfare and ethical loss. Breeding for longevity alongside production, and reducing maximum yield targets, could significantly improve both welfare and sustainability.

What You Can Do

Support dairy farms and certification schemes that prioritise cow longevity
Choose dairy products from producers who report average cow lifespan
Advocate for research and breeding programmes that improve longevity alongside production
Reduce dairy consumption to lower demand pressure on high-production systems
Engage with debates about sustainable dairy farming models